Compound for dissolving resins.



FLiAuzous rAv KLEINSTEUBER,

COMPOUNDFQR nassoLvi o Resins,

on PANKOW-BERLIN, eERMAn'inQ 'me mm rormmg arz gjr Lettere Patent 2%. emcee, detenl August 21, woo.

en ine application filed November 9, 1399, Serial In. 736,403.; Divided and. this npylication filed May a, 1900'; sienna. v 15,396. on specimens.)

To cal/T whom, it may concern:

Be it known that I, FRANZ-GUSTAV KLEIN- STEUBER, a subject of the Grand Duke of Sexe-Weimer, residing at Pankow -Berlin, Germany, have invented certain new and useful Improvements. in a Compound for Dissolving Resins; and I do hereby declare the following to be a full, clear, and exact description of the inventiomeuch as will enable to others; skilled in the art to which it eppertains to make and use the some. c

In the manufacture from resins of c plastic materiel adapted to be molded or otherwise shaped to any desired form which Willherden i 5 on drying it ie of course necessary to dissolve the resinous material. It iewell known that by means of the eolvente generally employed incuyopecics of reeiue ccn only be incom pietely dissolved, and this with great diflieo oulty--ne, for inota-ncm'thc (repuls -yet these very resins are particularly well adapted for the manufacture of th'meteriei referred to, owing to their peculiar character and specific properties.

5 My invention has for its object to provide an improved and useful compound to be used with solvents in the manufacture of products from resineof a plastic material whereby the dillioultiee referred to are obviated and a 3'0 completesolution of the resin readily efiected,

' while the quality of the final product is me.-

terially enhanced. To these ends I add to the resinsolventnsuelly employed or n, solution of resin it suitable quantity of. a com- 5 pound whioh,in conj unction with acid solvent, reodilyand completely dissolves the resin and imports to the final product properties not posscseed. by similar products as heretofore innnufactuned. 4o In carrying out my invention I prepare a, compound consisting of a, solution of (laminar end tong or Wood-oil in benzolo and oil of turpentine, and of iihlSl add to the resin solvent or to the resin solution a, quantity 45 equal to from one to twenty per cent. of the reein, according to the nature thereof, The properties of this compound may be matcrially enhanced by the addition to the compound of oil of rosemary. 5o In practice I preferably prepare the compound as follows: I dissolve, say," three p2,: of dnmmar in five parts of oil of turpentin I then. mix fifty parts of tong or wood-0 twenty-three parts of bcnzole, and five par of oil of turpentine and mix the seine wi the solution of (laminar, and a suitable qua tity of this compound in. about the propc tions above stated is mixed with the resin S( ventns benzolc, alcohol, oil of turpentin or the-like -end to this I add the resin to 1 dissolved While stirring the same and he the mixture to a temperature of from 40 50 ceutigrndc until the solution is complete and, as above Stated, I may, and, in fact, pirefento, add to the compound of damma tong oil, bennolo, and oil of turpentine abo given about two parts of oil of rosemer 'lhie however, I prefer to oddafter the mi ture has been brought to the temperature r ferred to, though it may he added before 4 many stage before the composition has thici cued. r s

Furthermore, and as heretofore stated, may first propane a solution of the resin 1 any usual solvent, so for as thiscen be don and then add thereto a, suitable quantity i the compound and proceed as above d scribed; r

If a filler--snch as asbestos, mica, or t] like-4s to be mixed with the material, tl compound. may be added to the resin solutic after the admixture therewith of such filll or before, as may be desired.

It will be understood that I do not lim myself to the exact proportions of the con pounds of demmar, tung, or wood-oil, oil turpentine, and oil of rosemary, as these m2 be'varied Within certain limits, though I hm found that the proportions givenproduce e: cellent results. I have also found that if tl composition of matter obtained as above d scribed is allowed to stand from twenty-fol to forty-eighthours a better final product obtained;

By the compound described the slimy coi 'stituents of the resins, which of the gi'ee est importance to the final product, are con pletely dissolved and become intimately i1 corporated in the muse, and, as will be i'ealdil understood, the manufacture of material such as referred to from resins is greatly fa cilitated and expedited, whilethe final product is superior in cvery respec't to like products as heretofore made in that the compound 'z'ldded to the resin solvent or resin solution not only results in the complete dissolution of the same, butin that a more homogeneous, tough, and solid product is obtained, the brittleness of which is reduced to a minimum, while the physical properties of the tong or wood-oil, irrespective of its great superiority to linseed-oil as a dryer, have a Very material influence on the final product", so that the latter is especially adapted to the mennfacture of bodies or objects subjected to shock or jarring, hence to the use of such final products as electrotechnical insulations.

Having thus described my invention, what I claim as new therein, and desire -to.secure by Letters Patent, is 1 1'. A compound to be used with solvents for resins consisting of a solution of dammar, tung or wood-oil, benzole and oil of turpentine in about the proportions set forth.

2. A compound who used with solvents for resins consisting of a solution of dammar and tong or wood-oil in benzole and oil of turpentine and oil of rosemary in about the proportions set forth.

In testimony that I claim the foregoing as,

my invention I have signed my name in presence of two subscribing witnesses.

FRANZ GUSTAV KLEINSTEUBER. Witnesses:

MAX. (J. sTAOl-ILER, HENRY HASPER. 

